Update submodules: plugins (new commits)

plugins:
    e13440e Chris Smith <chris@dmdirc.com>
            Remove error status from the error dialog.

            We don't populate this with the new error reporting system.

            Gerrit: http://gerrit.dmdirc.com/3330

Change-Id: I2d057cdf6cf222d8ca10a6d26318397f77cea65c